1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vekshin1
1 year ago
10

The sum of a number and -2 is -9 . what is the number

Mathematics
2 answers:
Sveta_85 [38]1 year ago
8 0

Answer:

-7

Step-by-step explanation:

Let's put this into an equation with x being the unknown number. Then use the reversed order of operations to find the value of x.

x + -2 = -9

   + 2   + 2

x = -7

Pls mark Brainliest with the crown

adell [148]1 year ago
4 0

Answer:

x=-7

Step-by-step explanation:

Translate into an equation.

“A number” + -2 = -9

Assign “a number” to be “x”

X+-2=-9

Add 2 on both sides to even it out and get x

X-2+2=-9+2

X=-7

The number is -7. :)

You might be interested in
What is 0.0000091 written in scientific notation
zaharov [31]
The goal of writing a number in scientific notation is to have a decimal number, with one digit to the left of the decimal point, followed by a <span>×⨯</span><span>1010</span> to some power. To format the number this way, multiply the <span>0.00000910.0000091</span> by <span>1010</span> <span><span>−6</span><span>-6</span></span> times, making it <span>9.19.1</span>. Each multiplication by <span>1010</span> moves the decimal point one digit to the left, but in order to keep the same number, multiply <span>9.19.1</span> by <span><span>10<span>−6</span></span><span>10<span>-6</span></span></span>.<span>9.1×<span>10<span>−<span>6</span></span></span></span>
8 0
3 years ago
Read 2 more answers
Identify the property:
Lorico [155]

Answer:1) commutative property of addition

Step-by-step explanation:

6 0
3 years ago
Z to the power of 2 =1
stiv31 [10]

That would be written as:

z^{2} = 1


And the step-by-step equation would be:

z^{2} = 1 → we take the 2 to the right side of the equation and do the IO*

z = \sqrt{1} →we solve for \sqrt{1}

z = 1 → final answer


*Ps - IO is not an existing term and stands for inverse operation. In this case, because when we take to 2 to the right side of the equation (the 2 is a power) it'll have to turn into a square root (because exponents and roots are inverse operations)



Hope it helped,



BioTeacher101

3 0
3 years ago
I NEED HELP WITH ME MATH
ruslelena [56]

ok so lets start of with the fact that the whole thing is 21 units.

So we do 21-9=12 so then we now know that the rectangle is 12 so then we do 12*8 units which is= 96 . Now the triangles. so the first one we know that its 8*3 and times it by 1/2 because two triangles is equal to a rectangle so the first triangle is 12 and now the second. its 9-3= 6 then its 6*8*1/2 which is equal to 24 so now the final answer is

96+12+24 which is equal to 132 so i'm guessing it 132 square units

5 0
2 years ago
Solve by substitution. Please show work!!!<br> x+4y=-3<br> x+7y=-12
marshall27 [118]

\huge\mathcal\colorbox{red}{\color{pink}{ᶛɲƧཡэʀ}}

x = 9

y = -3

6 0
2 years ago
Other questions:
  • Classify these functions as even, odd, or neither even nor odd.
    10·1 answer
  • Write the formula for a triangle with a height of 2 1/2 and a 13 in base
    7·1 answer
  • Two friends share 1/4 gallon of lemonade equally.what fraction does each friend get
    13·1 answer
  • What is expanded form?
    6·2 answers
  • You invest $500 into a savings account that compounds interest quarterly at a rate of 2%. What will be your account balance afte
    8·1 answer
  • Are the ratios 2:1 and 18:9 equivalent
    5·1 answer
  • Please help me answer this question.
    9·1 answer
  • 1111111111111111111111111111111111111111111111111111111111111111111111111111111
    8·2 answers
  • John and his best friend found some money. They split the money evenly, each getting $14. How much money did they find?
    10·2 answers
  • Help y’all
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!